Improvement in windmills



. I.. H. PALMER.`

'WIND-MILL.

No. 192,931. Pate'nta 51115110.1877.

Ny PETERS, PHOTO-LITHOGMPMER4 WASHINGTON. D C4 UNITED STATES ISAAC H. PALMER, OF LODI, WISCONSIN.

IMPROVEMENT IN WINDMILLS.

Specication forming part of Letters Patent No. 192,931, dated July 10, 1877.; application led January 3, 1877.

To all whom it may concern:

Be it known that I, ISAAC H. PALMER, of Lodi, in the county of Columbia and State of Wisconsin, have invented a new and useful Improvementin Windmills; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to windmills of that class in which the fan's that compose the wheel swing in and out of the wind on axes at right angles to radial lines drawn through their centers, and which are held to .the wind by means of a spring-power.

The invention consists of certain improved details of construction, which will be fully set forth hereinafter and particularly claimed.

The head A of the wheel is fixed upon a rotating shaft, in the usual manner. Through this head are rods, which extend from a disk, a, within the wheel, and on the same shaft to a spider, b, on the outside. This spider, like v,the disk, slides freely on the sh aft. It is pressed inward by means ofa coiled spring, c, the outer end of which bears against a nut on the outer end of the shaft. On the outer side of the head are studs c' c', in which are pivoted bell-crank levers d. The inner and shorter arms of these levers are connected by rods or bars e to the spider b. The outer ends are connected by rods g to the pivoted wings h. These wings are held in arms i i, and when the spider is pressed out through the agency of the bell-crank lever and its connections the wing is thrown toward a position at right angles to the arms i i. The spider may be thus thrown outward against the spring c by means of a lever, lc, acting on the disk, which may be supplied with a wire and operated in the usual manner. Obviously any excess of wind acting on thatpart: of the wing to which the rodis attached, that being greater than the part on the outside of the pivot, will tend to force the said wing against the force of the spring out of the wind. v

The number of levers and arms will, it is clear, depend upon the number of wings.

I claim as my invention- The disk a, spider' b, and connecting-rods which pass through the head, in combination with the bell-crank lever d, connecting rods or bars g, wing h, and spring c, the parts being arranged to operate as set forth. ISAAC H. PALMER.

Witnesses:

H. M. AYER, H. R. EATON. 

